(ن) دَخَلَ يَدْخُلُ دُخُوْلًاdakhala yadkhulu dukhūlan: to enter, to go in to meet someone. ﴿اُدْخُلُوْا فِي السِّلْمِ كَآفَّةً﴾ (Al-Baqarah 2:208)
دَخَلٌdakhal (noun, ism dhāt): that which causes corruption, a source of spoiling (said of something introduced into another thing of which it is not a part, for example when chickpea husks are mixed into tea leaves). ﴿تَتَّخِذُوْنَ اَيْمَانَكُمْ دَخَلًا بَيْنَكُمْ﴾ (An-Naḥl 16:92)
Form IV (ifʿāl) اَدْخَلَ يُدْخِلُ اِدْخَالًاadkhala yudkhilu idkhālan: to cause to enter, to admit. ﴿وَيُدْخِلُهُمُ الْجَنَّةَ﴾ (Muḥammad 47:6)
مُدْخَلٌmudkhal (passive participle, ism mafʿūl, as a noun of time or place, ẓarf): place of entering / the act of admitting. ﴿رَّبِّ اَدْخِلْنِيْ مُدْخَلَ صِدْقٍ﴾ (Al-Isrāʾ 17:80)
Form VIII (iftiʿāl) اِدَّخَلَ يَدَّخِلُ اِدِّخَالًاiddakhala yaddakhilu iddikhālan: to enter deliberately, to creep in; مُدَّخَلٌmuddakhal (passive participle, ism mafʿūl): place to enter, a way in. ﴿اَوْ مَغٰرٰتٍ اَوْ مُدَّخَلًا﴾ (At-Tawbah 9:57)